Typewriting machine



March 18, 1924; Y 1,486,966

A. A. JOHNSON TYPEWRITING MACHINE Fil ed Sept. 11. 1920 Patented Mar. 13, 1924.

warren snares PATENT caries.

ARTHUR A. JOHNS ON, OF NEW YORK, N. Y., ASSIGNOR '10 UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed September 11, 1920.

To all whom it may concern:

Be it known that I, ARTHUR A. JOHNSON, a citizen of the United States, resident of the city of New York, in the county of the Bronx and State of New York, have invented new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to typewriting machines and more particularly to typewriting machines of the fan-fold type.

For this type of machine the Work-sheet is provided in a continuous strip or web in the form of a fan-fold; in other words, a longitudinally folded sheet, having a zig-zag appearance in transverse cross-section. Each leaf is the width of the form or printed bill, etc., and comprises a continuous succession of forms, etc. At the fold the web is usually perforated or partly ruptured to facilitate the severance of the separate forms of one group upon completion of the typewriting operation.

In some cases, it is desirable to automatically sever the web at the folds and this has heretofore been done by providing means at the free end of the carbon carrying arm on the carbon shifter, in the form of a splitter which engages the fold of the web and splits the web along the line of the perforations or ruptures. Obviously, the arm is not steady at its unsupported end, and, therefore, the splitter has considerable freedom to spring vertically.

A feature of this invention is the pro vision of means for splitting the web carried by the carbon arm at its fixed or supported end. According to this invention the splitter is mounted on the carbon arm adjacent the support for the carbon arm and therefore is steady against springing vertically. In addition to this advantage the present arrangement has the advantage of being mounted on the arm at a point out side the path of the web, whereas the previous arrangement made it necessary to lengthen the carbon arm to provide a mounting for the splitter. It should be understood'that the splitter of the present invention does not split the fold into which the carbon arm carrying the splitter extends, but splits the next fold. If, for example, the lowest carbon arm extends into the low- Serial No. 409,627.

est fold of the web, the splitter on said arm will not split the lowest fold, and, if it is desired to do this, it will be necessary to provide other means, such as a splitter, at the free end of the arm.

Another feature of the arrangement and another feature of this invention is the provision of a fan-fold web splitter which can be made effective or ineffective at will. In accomplishing this result it has also been found advantageous to mount the splitter at the fixed or supported end of the carbon arm. The advantage of the provision of a splitter capable of being made effective or ineffective at will, will be manifest when it is considered, that, with this device, the operator may cause the web to be split when desired or to remain united at the fold when desired by merely swinging the splitter to or from effective position and without in any other way disturbing other parts of the machine.

Other features and advantages will hereinafter appear.

Referring now to the drawings.

Fig. 1 is a side elevation of an Underwood fan-fold typewriter, omitting parts not essential to the understanding of the present invention.

Fig. 2 is a perspective view, showing the carbon arm and the splitter in operative position.

Fig. 3 is a top plan view, showing the parts shown in Fig. 2.

Fig. 4 is a front elevation, showing the parts shown in Fig. 2, the splitter being shown in ineffective position in dotted lines.

In an Underwood fan-fold typewriter, type 10 are mounted to swing upwardly and rearwardly against the front face of a platen 11, carrying a work-sheet or web 12. The web 12 is held to the platen 11, to be fed thereby, by feed rolls 13 and 1%, and is guided over the paper-table 16 and supplementary carriage 15 by suitable means not shown. The platen is mounted in a frame to be swung upwardly in order to straighten the courseof the web to permit the carbon sheets 17 to be shifted to a new position w1th respect to the web 12, after the form has mounted on standards 21, secured to a carbon shifter 22, slidably mounted on rails 23, on the supplementary carriage 15, and having a handle 24:, by means of which it is operated.

To split the web 12, at the longitudinal fold 25, I preferably provide an arm 26, of sheet metal, having a portion bent to form a bearing 27, and a portion 28, formed with a cutting edge 29, to engage the web at the longitudinal fold 25, and split the same. To facilitate this splitting action the web may be provided with perforations or ruptures 30 at the fold 25.

The splitter arm' 26 is mounted on a pin 31, extending through the bearing 27 and through ears 32, preferably struck-up from the carbon arm 18. The ears 32 are arranged close to the standard 21, as will be seen in Fig. 2, and thus close to the support for the carbon arm 18.

In order to enable the splitter 26 to be made effective or inefiective at will, it is mounted as before described so as to be rotatable about the axis of the pin 31 from the position shown in full lines in Fig. 1 to that shown in dotted lines,. and vice versa.

To facilitate the operation of making the splitter effective or inefi'ective and for the purpose of bringing the splitting edge 29, of the splitter 26, to position to engage'the fold of the web, the splitter is provided with bends 33, as shown in the drawings.

When the carbon shifter 22 is moved to a new position, at the completion of the writing of a form, the leading edge of the web is held by the hand of the operative while the handle 27 on the shifter is thrust rearwardly. This causes the shifter 22, and all parts connected thereto, including the splitter 26, to move rearwardly relatively to the web, thus causing the web to be split by the edge 29 of the splitter, along the lon itudinal fold 25. The fold into which the lowest arm 18 eXtends will obviously not be split by the splitter arm-26 mounted on the end of the carbon arm adjacent its support, and, if it is desired to split this fold, provision must be made of suitable means, such as a splitter, mounted on the free end of the arm 18. This last-mentioned splitter may be similar to those disclosed in the patent to Smith, No. 1,206,765, dated November 28, 1916.

Variations may be resorted to within the scope of the invention as defined by the following claims.

I claim:

1. In a typewriting machine, the combination with a carbon shifter, of a carbon arm, a support for the carbon arm, and means carried by the carbon arm at a point adjacent the support, for splitting a folded web at the fold. 4

2. In a typewriting machine, the combination with a carbon-shifter, of carbon-arms carried thereby and extending alternately from opposite sides thereof into the folds of a fan-fold Web, and means for severing the folds of said web comprising fold-severing devices mounted on said corbon-arms adjacent the parts of the shifter to which they are attached.

3. In a typewriting machine, the combination with a carbon-shifter, of carbon-arms carried thereby and extending alternately from opposite sides thereof into the folds of a fan-fold web, and means for severing the folds of said web comprising fold-severing devices mounted on said carbon-arms adjacent the parts of the shifter to which they are attached, said devices being shiftable to and from effective position.

4. In a typewriting machine, the combination with a carbon shifter, of carbon arms extending into the folds of a fan-fold web, said carbon arms being secured at one end to the carbon shifter at a point outside the path of the web, and means on said carbon arms, mounted at a point outside the path of the web, for severing the web at the fold.

5. In a typewriting machine, the combination with a carbon shifter, of a carbon arm supported on the shifter, and means for splitting a folded web, said means being movable from operative to inoperative position.

6. In a typewriting machine, the combina- 7 tion with a carbon shifter, of a carbon arm supported on the shifter, and means for splitting a folded web at the fold, said means being capable of being made effective or ineffective at will withoutchanging theposition of the carbon arm.

'7. In a typewriting machine, the combination with a carbon shifter, of a carbon arm, a support on which the carbon arm is mounted, one end of the oarbon arm being free, a web severing. means mounted on the carbon arm adjacent the support therefor, and means whereby said severing means may .be shilflfted to effective or ineffective position at W1 8. In a typewriting machine, the combination with a carbon shifter, of a carbon arm extending into the folds of a fan-fold web, said carbon arm being secured to the. shifter at a point outside the path of the web, means for severing the web mounted on the carbon arm at a'point outside the path of the web, said severing means being shiftable to a point in the- "path of the web and to a point outside the path of the web.

9. In a typewriting machine the combination with a carbon shifter, of carbon arms carried by said shifter, means for severing a folded web, said means being shiftable to a point in the path of the web and to a point outside the path of the folded webs, one of said movements being to effective position.

10.-In a. typewriting machine, the combb nation vitli a carbon arm, a Web splitter, edge on said bent-up-portion and a curved comprising an arm pivotally mounted on the portion forming a bearing, and ears on said carbon arm and ears on the carbon arm for carbon arm forming a support for said bear- 2 supporting the splitter arm. ing portion.

5 11;. In a typewriting machine, the combi- In testimony whereof, I have signed my nation with a carbon arm, of a Web splitter name to this specification. having a bent-up-portion and a splitting ARTHUR A. JOHNSON. 

